The nice lady at the fleamarket the other day gave me three boxes of the topfin brand "hardy water plant collection" because all the tubers were dried out. (The variety pack they sell at the pet store) She thought they might still sprout but didn't want to sell them. Not being one to turn down something for free I took them home. A couple seemed to have rotted away and vanished completely from that coconut straw. . But the remaining tubers about 9 are all pretty firm and completely dry. Am I wasting my time trying to get them to sprout? Can't seem to find an answer.. I think I have iris lilies and cattails.